PsiTTACIDiE.] 



OSTEOLOGIA AVIUM. 



[Pezoporin^e. 



the horizontal plane ; two large foramina on the posterior margin, which is much wider 

 than the anterior ; anterior edge of the keel carried forward as far as the extremity of the 

 manubrial process, which is very small and slight. Coracoids as in Psittacus. Furculum 

 represented by a narrow and thin strip of bone, and extending downwards on the inside 

 of the coracoids for about half their length. 



Pelvis similar to Psittacus, but proportionately longer and narrower; obturator 

 foramen consisting merely of a narrow slit between the os pubis and the ischium. 



Tarsi longer in proportion to the tibiae than in Psittacus ; remaining bones similar in 

 form. 



Measurements. 



Length of humerus 

 Length of ulna . . 

 Length of metacarpus 

 Length of femur 

 Length of tibia . . 

 Length of metatarsus 

 Length of sternum 



Tenths. 



14 

 16 

 10 

 13 

 18 



17 



Tenths. 

 Breadth of posterior margin of sternum 8 

 Breadth of anterior margin of sternum 6 



Depth of keel 7 



Length of head 19 



Breadth of head ....... 8 



Length of pelvis 17 



Breadth of pelvis 8 



Trichoglossus, Vig. & Horsf. 



Hsematodus, Linn. 



In general form similar to the foregoing, but with only a very rudimentary furculum, 

 and the keel of the sternum not so deep ; the tarsi shorter in proportion to the tibiae. 



Measurements. 



7-^ 



' 2 



Tenths. 



Length of humerus 10 



Length of ulna 12 



Length of metacarpus .... 



Length of femur 11 



Length of tibia 16 



Length of metatarsus 6 



Length of sternum 17 



Tenths. 

 Breadth of posterior margin of sternum 9 

 Breadth of anterior margin of sternum 6 

 Depth of keel 5 



Length of head . 

 Breadth of head . 

 Length of pelvis 

 Breadth of pelvis 



17 



9 



16 



9 



Platycercus, Vig. 



Zonarius, Sh. 



Cranium with the inferior maxillaries much stronger and broader than in Tricho- 

 glossus versicolor ; manubrial process bifurcate ; no furculum ; the remaining portions 

 of the skeleton similar in form, but larger. 

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